North Carolina is a U.S. state in the south-eastern part of the country. It shares its border with Virginia, South Carolina, Georgia, and Tennessee. It also has a long coast along the Atlantic Ocean. The state capital is Raleigh, but the biggest city is Charlotte. In 2019, there were almost 10.5 million people living in the state. This made it the ninth most densely populated state in the US. If you look at data from 2020 again for state capital, you can see that the air quality in Carolina was within the World Health Organization's target range for 8 months...